Tension device.



110.811,141 PATBNTED JAN. 30, 1906. J. GOOD.

TENSION DEVICE.

AYPLIGATION FILED 55111732.26. 1904,

SATEJS PATEN T OFFICE.

JOHN GOOD,- OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNEASSIGNMENTS, TO THE JOHN GOOD CORDAGE CO., A CORPORATION or NEW YORK.

tensioni DEVICE.

Specification of Letters Patent.

Patented Jan. 30, 1906.

To LZZ whom it may concern l Be it known that I, JOHN GOOD, a citizen ofthe United States, and a resident of the borough of Brooklyn, in thecity and State of New York, have invented a new and useful Improvementin Tension Devices, ofwhich the following is a specification.

My invention relates to an improvement in means for 'controlling theunwinding of thread, twine, or cord from bobbins and spools, the objectbeing to provide a device in which an even tension is exerted upon thematerial being unwound.

A practical embodiment of my invention is represented in theaccompanying drawings, in which* Figure 1 represents the device in topplan with a spool in position to show the Operative relation oftheparts, and Fig. 2 is a longitudinal vertical section through the same.

A suitable base is denoted by 1. A tubular bearing 2 is provided with alining-tube 3, having a tapered bore, as shown. This tubular bearing ishinged to swing in a vertical plane upon a pintle 4, supported by lugs 5and 6, u rising from the base 1. Spaced from the ugs 5 and 6 I providean uV right 7 on the base 1, which upright is provi ed with a verticalrecess 8 open through its top and inner face. An L-sha ed bracket 9 10is located to the front of t e upright 7, the horizontal base of thebracket being denoted by 9 and the upright arm by 10. A two-armedrockinglever 11 12 is hinged to swing vertically on a pivot 13,'carriedb the arm 10 of the bracket. The horizonta arm 11 of the lever pro'ectsinwardly through a slot 14 in the uprig t 7 into the lnterior of therecess 8. The vertical arm 12 of the lever is provided with a set-screw15, having a lock-nut 16. The upright 7 is provided with a socket-piece17, screwed or otherwise secured in alinement with the set-screw 15. Aspring-actuated pin 18 is :fitted to slide in the socketpiece 17, theinner end'oi the pin projecting through the bottom of the socket- 'eceinto the recess 8 in the above t e arm 11 of the rocking lever'lfr'r'iispring 19 is inter-v posed between the bottom of the socket-pieceand an abutment ,20 on the pin 18, tending to hold the outer end of thepin pressed against the inner end f the set-screwl` 1.5.1

A spring 21 isattached to the' arm 1 1 ofthe 23 24, above referred to.

The spool is denotedby 25, and it is removably mounted on its spindle,as follows: The spindle is provided with a, tapered head 26, which iitswithin the tapered bore of the bearing-tube 3. The spindle is providedwith a vscrew-threaded portion 27 adjacent to the inner end of the head26, which screw-,threaded portion is engaged withanvadjusting-collar 28for regulating the closeness of it"between the tapered peripheryof'thehead 26 and the bore of the bearing-tube 3. A setscrew 29 is providedfor lockingthe collar 28 in its desired adjustment f-Adjacent to theinner end of the screw-threaded portion 27 the spindle is provided witha tapered seat 3()4 for 'supporting one end of the spool 25. The spindleis further provided with a screwt readed portion 31 adjacent to theother end of the spool 25, which screw-threaded portion is engaged by aremovable nut 32, iaving a tapered seat 33 for supporting the adjacentend of the spool 25. The spindle is further provided with a reduced.plain end 34, which is iitted to receive athrust-block 35, fitted to therecess 8 inthe upright 7. A suitable packing 36 may be interposedbetween the nut 32 and the inner end of the thrust-block 35. The nut 32may also be provided with suitable handles 37 for. the

purpose of readily inserting and removing the nut. When the parts are inposition, the bottom of the thrust-block 35 rests upon the rounded end38 of the rocking lever 11 12 and the outer end of the thrust-block isenraged by the inner end Oi` the sliding pin 18. The weight ol the spoolwill be transmitted through the thrust-block 35 to the arni 1 1 of therocking lever, and the arm 12 oi the rocking leverwill force the slidingpin 18 with greater or less force against the outer endvof thethrusteblock 35.

Asthe tapered head 26 o1: the spindle becomes worn the collar 28 may beunscrewed a suficient distance to permit the head to enter thelining-tube 3 an additional distance.

The ends of the spool 25 are providedwith IOO 4plates 39 40, of brass orother suitable material, which plates vengage the tapered seats 30 33 asthe nut 32 is screwed inwardly for securelygripping the spool againstmovement on the said seats.

In voperation the wound spool is placed upon the spindle, andtheremovable tapered seat is then screwed thereon to clamp the spoolonto the spindle. The thrust-block is 1o then inserted onto the free endof the spindle, and the spindle is then inserted into position with 'tsthrust-block resting upon the arm 1l of the rocking lever 11 l24 andengaged bythe sliding pin 18.- As the thread is unwound from the spoolthe Weight ofthe spooldecreases, thus causing the arm 12 of the rockinglever to press with graduallylessening force against the pin 18. Thiswilllessen'the pressure of the pin 'againstfthe zo thrust-block of thespindle.

It will be seen that this friction attachment does not interfere at allwith the ready insertion and removal of the spools. Furthermore, theamount of friction may be 2 5 readily adjusted to the .utmost nicety ina vsimple manner. l-

What I claim as my invention is- 1. Aspool-carryingspindle, a rockingbea ing for receiving the spindle-head and a ten- 3o sion device forsupporting the free end of the spindle.

,2: A spool-carrying spindle having a ta- .pered head, a rocking bearinghaving a tapered bore for receiving the head, means for 5 adjusting theposition of the head with respect tothe bearing and means for supportingthe free end of the spindle.

3. A spool-carrying spindle having a tapered head anda screw-threadedportion ad- 4o jacent thereto, a rocking bearing having a tapered borefor receiving the head, an adjusting-collar engaging the screw-threadedportion and the bearing for adjusting the position of the head withinvthe bore and means for supporting the free end of the spindle.

4. A spool-carrying spindle having a tapered head, a rocking bearinghaving a tapered bore Jfor receiving the head and a tension device forsupporting the free end ofthe -5o spindle.

5.;A spool-carrying spindle having a ta-l pered head, a screw-threadedportion and a fixed tapered seat adjacent to each other.

6. A spool-carrying splndle having a tapered head, a screw-threadedportion and a 4 ta ered seat adjacent to each other and anot erscrew-threaded portion spaced therefrom and a removable tapered seatarranV ed to engage said last-named screwthrea ed portion. 6o 7. Aspool-carrying spindle, a bearing for1` its head and a tension devicefor supporting the free end of the spindle comprising a rocking leverone., arm of which supports the spindle and a sliding pin interposedbetween the end of the spindle and the otherv arm of the lever.

8. Aspool-carrying spindle, arocking bearing for its head and a tensiondevice for supporting the free end'o the spindle compris- 7o ing arocking lever, an adjusting-screw carried by one arm of the lever, theother arm of the lever serving to support the spindle and a sliding pininterposed between the adjustingyscrew and the end of the spindle. 75 I9. A spool-,carrying spindle, a rocking bearing for receiving thespindle-head and a tension device for supporting the other end of thespindlecomprismg a thrust-block on the free end of the spindle, a springactuated 8o rocking lever one arm of Which engages the bottom of thethrust-block and a spring-actuated sliding pin interposed between theother arm of the lever and the thrust-block.

10. The combination with a suitable base, of a spool-carrying spindle, arocking bearing carried by the base for receiving the head of thespindle, an upright having avertical recess therein, a thrust blockcarried by the free end of the spindle located within said re- 9ocessand a spring-actuated tension device enaging the thrust block forsupporting the ee end of the spindle.

In testimony that I claim the foregoing as my invention I have 'signedmy name, in pres- 95 ence of two witn esses, this 23d day of August,1901Y FREDK. HAYNES, HENRY THIEME.

